Ukraine is struggling to hold back a major Russian incursion near its second biggest city of Kharkiv.

Thousands of people are fleeing their homes in the northeastern region, as missiles routinely target the area.

The crossborder offensive is one of the most significant Russian ground attacks since the start of the war.

During a surprise visit to Kyiv on Tuesday, US Secretary of State Antony Blinken told President Volodymyr Zelensky that military aid is "now on its way".

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